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mcclock_ibus.c revision 1.6 
      1 /* $NetBSD: mcclock_ibus.c,v 1.6 2000/01/10 03:24:36 simonb Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
      5  * All rights reserved.
      6  *
      7  * Author: Chris G. Demetriou
      8  *
      9  * Permission to use, copy, modify and distribute this software and
     10  * its documentation is hereby granted, provided that both the copyright
     11  * notice and this permission notice appear in all copies of the
     12  * software, derivative works or modified versions, and any portions
     13  * thereof, and that both notices appear in supporting documentation.
     14  *
     15  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     16  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
     17  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     18  *
     19  * Carnegie Mellon requests users of this software to return to
     20  *
     21  *  Software Distribution Coordinator  or  Software.Distribution (at) CS.CMU.EDU
     22  *  School of Computer Science
     23  *  Carnegie Mellon University
     24  *  Pittsburgh PA 15213-3890
     25  *
     26  * any improvements or extensions that they make and grant Carnegie the
     27  * rights to redistribute these changes.
     28  */
     29 
     30 #include <sys/cdefs.h>			/* RCS ID & Copyright macro defns */
     31 
     32 __KERNEL_RCSID(0, "$NetBSD: mcclock_ibus.c,v 1.6 2000/01/10 03:24:36 simonb Exp $");
     33 
     34 #include <sys/param.h>
     35 #include <sys/kernel.h>
     36 #include <sys/device.h>
     37 
     38 #include <dev/dec/mcclockvar.h>
     39 #include <dev/dec/mcclock_pad32.h>
     40 
     41 #include <pmax/ibus/ibusvar.h>
     42 
     43 
     44 static int	mcclock_ibus_match __P((struct device *, struct cfdata *,
     45 		    void *));
     46 static void	mcclock_ibus_attach __P((struct device *, struct device *,
     47 		    void *));
     48 
     49 struct cfattach mcclock_ibus_ca = {
     50 	sizeof (struct mcclock_pad32_softc),
     51 	     (void *)mcclock_ibus_match, mcclock_ibus_attach,
     52 };
     53 extern struct cfdriver ibus_cd;
     54 
     55 
     56 static int
     57 mcclock_ibus_match(parent, match, aux)
     58 	struct device *parent;
     59 	struct cfdata *match;
     60 	void *aux;
     61 {
     62 	struct ibus_attach_args *ia = aux;
     63 
     64 	if (parent->dv_cfdata->cf_driver != &ibus_cd)
     65 		return (0);
     66 
     67 	if (strcmp("mc146818", ia->ia_name) != 0)
     68 		return (0);
     69 
     70 	if (badaddr((void *)ia->ia_addr, sizeof(u_int32_t)))
     71 		return (0);
     72 
     73 	return (1);
     74 }
     75 
     76 static void
     77 mcclock_ibus_attach(parent, self, aux)
     78 	struct device *parent, *self;
     79 	void *aux;
     80 {
     81 	struct ibus_attach_args *ia =aux;
     82 	struct mcclock_pad32_softc *sc = (struct mcclock_pad32_softc *)self;
     83 
     84 	sc->sc_dp = (struct mcclock_pad32_clockdatum*)ia->ia_addr;
     85 
     86 	/* Attach MI driver, using busfns with TC-style register padding */
     87 	mcclock_attach(&sc->sc_mcclock, &mcclock_pad32_busfns);
     88 }
     89